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1.) A mechanic jacks up a car to an angle of 8.0° to change the front tires. The car is 3.20 m long and has a mass of 1160 kg. Its center of mass is located 1.12 m from the front end. The rear wheels are 0.40 m from the back end. Calculate the torque exerted by the car around the back wheels.

--I'm not sure how to set this up. I know the equation for torque is t=fr sin(theta)

2.) A bucket filled with water has a mass of 71 kg and is attached to a rope that is wound around a 0.035 m radius cylinder. A crank with a turning radius of 0.15 m is attached to the end of the cylinder. What minimum force directed perpendicularly to the crank handle is required to raise the bucket?

--I think this is a moment of inertia problem... so for that shape it would be MR^2 but after you find that what would you plug that into?

Thank-you

--I'm not sure how to set this up. I know the equation for torque is t=fr sin(theta)

2.) A bucket filled with water has a mass of 71 kg and is attached to a rope that is wound around a 0.035 m radius cylinder. A crank with a turning radius of 0.15 m is attached to the end of the cylinder. What minimum force directed perpendicularly to the crank handle is required to raise the bucket?

--I think this is a moment of inertia problem... so for that shape it would be MR^2 but after you find that what would you plug that into?

Thank-you

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